The survival of summer truffle (Tuber aestivum Vittad.) requires conservation strategies

Document Type : Scientific Letters

Authors

1 Research Expert, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran

2 Assistant Prof., Research Institute of Forests and Rangeland, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

Abstract

Ectomycorrhizal symbiosis is essential for the establishment and functioning of trees in forest ecosystems. Truffles, belonging to the Tuber genus, are ectomycorrhizal fungi that produce hypogeous fruiting bodies (ascocarps) that are highly prized as a food delicacy. Following the research on the identification of ectomycorrhizal fungi in forest trees of Iran, some samples of forest truffle fungi were collected from areas of Golestan province and identified as summer truffle (T. aestivum Vittad(. based on macroscopic and microscopic characteristics. The visits revealed that the unprocessed and unauthorized harvest of the fungus has become major employment for indigenous peoples, damaging the survival of the fungus and natural resources. The presence of this fungus in the country as the most widespread forest truffle with high genetic diversity among the isolates is a very valuable resource for Iran which is potentially at risk due to habitat losses, increasing harvest, and environmental change. Declining populations of this fungus have been reported in some parts of the world. In certain Central, North and East European countries T. aestivum is included in the Red Lists of endangered species. Therefore, European countries have enacted laws to protect and exploit this valuable species. Conservation strategies for T. aestivum are proposed based on the current understanding of the ecology of this species.

Keywords

References

- Bonito G., Smith M.E., Nowak M., Healy R.A., Guevara G., Cázares E., et al. 2013. Historical Biogeography and Diversification of Truffles in the Tuberaceae and Their Newly Identified Southern Hemisphere Sister Lineage. PLoS ONE 8(1): e52765.
- Bonito G.M., Gryganskyi A.P., Trappe J.M. and Vilgalys R. 2010. A global metaanalysis of Tuber ITS rDNA sequences: species diversity, host associations and long distance dispersal. Molecular Ecology, 19(22), 4994–5008.
- Bratek Z. and Halasz K. 2005. A Tuber aestivum Karpat-medencei termohelyei. In: Chevalier G, Frochot H, Bratek Z (eds) Az europai fekete szarvasgomba (Burgundi szarvasgomba – Tuber uncinatum Chatin). Elso Magyar Szarvasgombasz Egyesulet, Budapest, pp 228–238.
- Bratek Z., Merenyi Z., Illies Z., Laslo P., Anton A., Papp L., Merkl O., Garay J., Vikor J. and Brandt S. 2010. Studies on the ecophysiology of Tuber aestivum populations in the Carpatho-Pannonian region. Österr. Z. Pilz. 19: 221–226.
- Bzdyk R.M., Olchowik J., Studnicki M., Nowakowska J.A., Oszako T., Urban A. and Hilszczańska D. 2019. Ectomycorrhizal Colonisation in Declining Oak Stands on the Krotoszyn Plateau, Poland. Forests 10, 30.
- Fischer C.R., Oliach D., Bonet J.A., and Colinas, C. 2017. Best Practices for Cultivation of Truffles. Forest Sciences Centre of Catalonia, Solsona, Spain; Yaşama Dair Vakıf, Antalaya, Turkey. 68pp. ISBN: 978-84-697-8163-0.
- Hardin G. 1968. The tragedy of the commons. Science 162: 1243-1248.
- Molinier V., Murat C., Baltensweiler A., Buntgen U., Martin F., Meier B. and Peter M. 2016. Fine-scale genetic structure of natural Tuber aestivum sites in southern Germany. Mycorrhiza, 26(8): 895-907.
- Morte A., Zamora M., Gutie ́rrez A. and Honrubia M. 2009. Desert truffle cultivation in semiarid mediterranean areas. In: Azcon-Aguilar et al (eds) Mycorrhizas—functional processes and ecological impact. Springer, Heidelberg, pp 221–233.
- Paolocci F, Rubini A, Riccioni C, Topini F. and Arcioni S. 2004. Tuber aestivum and Tuber uncinatum: two morphotypes or two species? FEMS Microbiology Letters 235: 109-15.
- Reyna S. and Garcia-Barreda S. 2014. Black truffle cultivation: a global reality. Forest systems, 23(2), 317–328.
- Smith S.E. and Read D.J. 2008. Mycorrhizal Symbiosis, third ed. Academic Press, San Diego,CA.
- Stobbe U., Egli S., Tegel W., Peter M., Sproll L. and Büntgen, U. 2013. Potential and limitations of Burgundy truffle cultivation. Applied Microbiology and Biotechnology, 97(12): 5215–24.
- Strullu-Derrien C., Selosse M.-A., Kenrick P., and Martin, F. M. 2018. The origin and evolution of mycorrhizal symbioses: from palaeomycology to phylogenomics. New Phytologist. doi:10.1111/nph.15076.
- Trappe J.M. and Castellano M.A. 1991: Keys to the genera of truffles (Ascomycetes). Mcllvainea 10: 47-65.
- Urban A., and Pla T. 2010. Conservation strategies for Tuber aestivum. Austrian Journal of Mycology 19: 273-279.
- Zambonelli A., Iotti M., Hall I.. 2015. Current status of truffle cultivation: recent results and future perspectives. Italian Journal of Mycology 44:31–40.
- Zambonelli A., Rivetti C., Percudani R. and Ottonello S. 2000: TuberKey: a delta-based tool for the description and interactive identification of truffles. Mycotaxon 74(1): 57-76.
Iran Nature
Volume 4, Issue 5 - Serial Number 18
November and December 2019
Pages 29-33

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